Bottom Line

Even if you're running Windows 10, you shouldn't rely on Microsoft's security tools. Many free third-party security apps are more effective at keeping you safe. We've tested 17 no-cost services to help you find the best free antivirus for protecting your PC.

Malware comes in many forms, but one thing's for sure—you don't want it attacking your computer. We've tested nearly 100 anti-malware apps to help you find the the best malware protection and removal software for all your devices.

Any effective antivirus software should protect you against all types of malware, including spyware. Among the many antivirus apps and security suites we've reviewed, these top choices offer the best spyware protection.